Damper



Dec. 13, 1927. 1,652,712

J. M. FACKLER DAMPER Filed 0011.1, 1926 Patented Dec. 13, 1927.

UNI-TED STATES PATENT OFFICE.-

KUHN" M. .EACKLER, QF HOLLAND, PENNSYLVANIA, ASSIGNOB TO NEW H011,v 7 LAND MACHINE COMPANY, OFVNEWv HOLLAND, PENNSYLVANIA, A. CORPORATIONV v F PENNSYLVANIA.

DAMPER.

Application mea october 1, 1926. serial No. 138,343.

This invention relates to K and especially to dampers provided inthe radiator rings of hot-air furnaces to establish or cut-off direct communication between the radiator ring and the smoke-Hue. The

object of the present invention is to provide an eflicient means whereby, whenever the firedoor is opened, the damper will be automatically opened to establish a direct draft to the smoke-flue and avoid the issuance of smoke and gases through the fire-door opening. The invent-ion is illustrated in the accompanying drawing and will be hereinafter fully described, the novel feature being particularly pointed out in the appended claims.

In the drawing;

Figure 1 is a. perspective view, partly broken away, of the upper portion of a hot air furnace having the present invention applied thereto;

Figure 2 is an enlarged elevation of the vertically movable yoke and the connections between the same and the damper, the damper being in closed position; i

Figure 3 is a similar View with the damper open;

Figure 4 is a view partly in plan and partly in horizontal section of the fire-door hinge and the parts immediately adjacent thereto.

The furnace, as is usual, comprises an outer casing 1 within which is a combustion chamber, partly shown at 2, to which fuel is fed through an opening controlled by a firedoor 3. 4- designates the usual radiator ring which receives the smoke and hot gases from the dome at the top of the combustion cham` ber, and 5 denotes the usual smoke flue conducting the products of combustion from the radiator ring to the chimney, it being understood that the smoke fine is spaced circumferentially of the ring' from the opening leading from the drum into the ring.

Extending longitudinally of the smoke flue and mounted in bearing lugs 6 therein, is a rock shaft 7 which is rigidly secured at its front end to the damper 8 whereby when the shaft rocked the damper will be rocked. On the rear end of the shaft is a crank 9 to the free end of which is pivoted a link l() depending therefrom through an opening 11 in the bottom of the smoke flue. The lower end of the link is pivoted to the lower end of a. yoke 12 which spans the smoke flue and is carried by a cable, chain or other flexible elecheck dampers ment 13'passing over idle rollers 14 supported inY any convenient manner above theY furnace. From the forward idler, the chain passes downwardly to a point adjacent the furnace fire-door `where it is attachedv` to therearwardly extending arm of a bell-crank 15 which is pivoted upon the lire-door frame above and at the rear of the fire-door. VTo the depending arm of the bell-crank is attached a short chain 16 or the like which extends forwardly and is secured to a disk 17 so as to wind thereon; said disk being formed integral with or rigidly secured to a hinge lug 18 of the tire-door so that, when the door is mounted the disk will be concentric with the hinge pin or pivot, 19.

Normally, the damper is closed as shown in Figure 2, standing upright across the radiator ring at one side of the smoke flue, so that the smoke and gases entering from the combustion chamber will be forced to How entirely around the ring, giving oi heat to raise the temperature of the air in the casing 1 before entering the smoke flue. In this position, the yoke 12 is lowered, and it may be noted at this point that the yoke is sustained solely by the chain 13 which is always held taut by the weight of the yoke. W'hen the fire-door is opened to permit fuel to be fed to the combustion chamber, the disk 17 is turned pivotally so that the chain 16 is wound thereon and a pull thereby exert ed upon the bell-crank 15 to rock the latter. Rocking the bel'l-crank createsl a pull upon the chain 13 which raises the yoke 12 and causes the link 10 to move upwardly, swinging the crank 9 upwardly and rockin the shaft 7 to turn the damper to open position, as shown in Figure 3, whereupon the smoke and gases will pass directly into the smoke flue. As the lire-door is closed, the weight of the yoke will effect reverse movement of the parts to close the damper.

The operation of the damper is not dependent upon manual operation of any parts behind the furnace but is performed automatically whenever the fire-door is opened or closed, so that the desired action is had without any attention on the part of the user. The arrangement is exceedingly simp'le and does not interfere with the use of the furnace in= any way, and it may be installed in any furace at a low cost.

Having fully described my invention what I claim as new and desire to secure by Letters-Patent, is l l. The combination with a furnace firedoor, and a smokelue, of a, rock shaft journaled on a side wall of the smoke-flue and extending longitudinally within the flue, a damper on the inner end of the shaft eccentric to the flue, a yoke freely suspended and spanning adj acent the outer end of the rock shaft, operative connections between the yoke and the rock-shaft, and operative connections between the rire-door and the yoke whereby opening of the lire-door will eeot opening of Jthe damper. A

2.` Thecombination with a fire-door, and a suspending the yoke Vand connecting it with the'fire-door whereby opening of the fire-door will effect opening of the damper and closing of the lire-door will eiizect closing of the deunper.l

Inftestirnony whereof, I have signed this specication.

` JOHN M. FAGKLER. 

